Synchrotron Radiation Based Study of the Catalytic Mechanism of Ag+ to Chalcopyrite Bioleaching by Mesophilic and Thermophilic Cultures
文献类型：期刊论文
| 作者 | Nie, ZY; Zhang, WW; Liu, HC; Xia, JL; Zhu, W; Zhang, DR; Zheng, L; Ma, CY; Zhao, YD; Wen, W |
| 刊名 | MINERALS
 |
| 出版日期 | 2018 |
| 卷号 | 8期号:9页码:- |
| 关键词 | ACIDIANUS-MANZAENSIS SILVER IONS ACIDITHIOBACILLUS-FERROOXIDANS ELECTROCHEMICAL DISSOLUTION HINDERED DISSOLUTION SPECIATION SPECTROSCOPY EVOLUTION OXIDATION MINERALS |
| ISSN号 | 2075-163X |
| DOI | 10.3390/min8090382 |
| 文献子类 | 期刊论文 |
| 英文摘要 | The catalytic mechanism of Ag+ for chalcopyrite bioleaching by mesophilic culture (at 30 degrees C) and thermophilic culture (at 48 degrees C) was investigated using synchrotron radiation-based X-ray diffraction (SR-XRD) and S K-edge and Fe L-edge X-ray absorption near edge structure (XANES) spectroscopy. Bioleaching experiments showed that copper extraction from chalcopyrite bioleaching by both cultures was promoted significantly by Ag+, with more serious corrosion occurring on the minerals surface. SR-XRD and XANES analyses showed that the intermediates S-0, jarosite and secondary minerals (bornite, chalcocite and covellite) formed for all bioleaching experiments. For these secondary minerals, the formation of bornite and covellite was promoted significantly in the presence of Ag+ for both cultures, while Ag+ has almost no effect on the formation of chalcocite. These results provided insight into the catalytic mechanisms of Ag+ to chalcopyrite bioleaching by the mesophilic and thermophilic cultures, which are both probably due to the rapid formation of bornite by Ag+ and the conversion of bornite to covellite. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/31130]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China 2.Hunan Univ Technol, Coll Sci, Zhuzhou 41000, Peoples R China 3.Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 10049, Peoples R China 4.Cent S Univ, Sch Minerals Proc & Bioengn, Minist Educ China, Key Lab Biomet, Changsha 410083, Hunan, Peoples R China 5.Chinese Acad Sci, Guangzhou Inst Geochem, CAS Key Lab Mineral & Metallogeny, Guangzhou 510640, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Nie, ZY,Zhang, WW,Liu, HC,et al. Synchrotron Radiation Based Study of the Catalytic Mechanism of Ag+ to Chalcopyrite Bioleaching by Mesophilic and Thermophilic Cultures[J]. MINERALS,2018,8(9):-. |
| APA | Nie, ZY.,Zhang, WW.,Liu, HC.,Xia, JL.,Zhu, W.,...&Wen, W.(2018).Synchrotron Radiation Based Study of the Catalytic Mechanism of Ag+ to Chalcopyrite Bioleaching by Mesophilic and Thermophilic Cultures.MINERALS,8(9),-. |
| MLA | Nie, ZY,et al."Synchrotron Radiation Based Study of the Catalytic Mechanism of Ag+ to Chalcopyrite Bioleaching by Mesophilic and Thermophilic Cultures".MINERALS 8.9(2018):-. |
入库方式： OAI收割
来源：上海应用物理研究所
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